Submission #1180511

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Source Code Expand

import java.util.*;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int i, N, T;
		int sum = 0;
		N = sc.nextInt();
		T = sc.nextInt();
		int[] A = new int[N];
		for(i = 0; i < N; i ++) {
			A[i] = sc.nextInt();
		}
		for(i = 0; i < N - 1; i ++) {
			if(A[i + 1] - A[i] < T) {
				sum += A[i + 1] - A[i];
			}else{
				sum += T;
			}
		}
		sum += T;
		System.out.println(sum);
	}
}

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